Radio receiving apparatus



Dec. 13, 1932. A. P. HlNsKYv 1,891,092

RDI, RECEIVING APPARATUS y:mad oct. 19.1928

' v ATTORNEY Patented Dec. 13, 1932 UNITEI) STATES PATENT OFFICE RADIO RECEIVING APPARATUS Application filed October 19, 1928. Serial No. 313,551.

This invention relates to radio signal receiving apparatus.

It is among the principal objects of the present invention to provide, in conjunction with a conventional receiving circuit, a plurality of variously characterized units which may be selectively associated with the circuit whereby its characteristics are varied for selectively controllingr the device for the reception of Widely varyinfY signal Waves.

` "-'Afurther important object of the invention is to provide in a radio receivingr circuit especially adapted for short Wave reception a plurality of variously characterized short Wave reception cou ling coils, together with means whereby sai coils may be selectively associated with the circuit for the reception of short Waves of Widely varying length.

Another object of the present invention is to provide in a radio apparatus a rotatable member adapted to carry a plurality of tuning coils adapted for selective association with fixed contact members, whereby the receiving circuit may have selectively associated therewith various receiving coils for the reception of variously characterized signal waves.

@ther objects of the present invention include the association With a plurality of re- 3o voluble coils of a pivoted coil so mounted that it is adapted to be moved in electrical association With the revoluble coils which have been selectively arranged in the receiving circuit.

The present invention provides new and important structural features whereby the combination and interrelation of parts provides a receiving apparatus, adapted for the reception of Widely varying signal Waves, and which is simple in construction and operation and which lends'itself readily to economic manufacture.

It will be understood that the specific apparatus herein disclosed may be widely varied Without departing from the spirit or y scope of the present invention, and that numerous changes and modifications may be made and the full use of equivalent-s resorted to. Figure l is a front elevation of the control panel and cabinet disclosing a preferred con trol -arrangement for use in connection with my invention;

Figure 2 is a top plan view of the invention; and

Figure 3 is a rear view of the form ofthe invention illustrated in Figure 2.

The structural features of the apparatus may include a panel 2l and a vertical standA ard 23 apcrturcd to receive therethrough and 60 form a bearing for the shaft 25, the front of the shaft 25 extending through the panel 2l and being provided with a controlling knob and dial arraligeineiit 26. Rearwardly of the standard 23 the shaft is provided with a Wheel 27 extending from which there are arms 28, the arms 28 carrying coils 40. rl`he coils adapted for use in the present form of the invention andI indicated at 4() may be termed open coilsr. They are adapted to have received therein for adjustable relation thereto a tickler coil 41 mounted upon a rotatably mounted shaft 4:2 journaled in van extending portion 43 of the standard 23. The shaft 42 is adapted to be controlled by 75 the provision of a control knob and dial 44 mounted upon the front panel 21. It will be seen by referring to Figure 3 of the draW- ing that the proper rotation of the shaft 25` is preferably clockwise and that a pawl 33 is moved outwardly by the inclined faces of a ratchet 32 secured for rotating with the shaft 25` with thewheel 27 and that, when any set of contact members 29 is in proper contacting position with Contact members 45, the pa-Wl 33 is iny position to snap over the straight edge of the ratchet 32 and thus indicate to the operator that the proper alignment has been completed. At the same time, it will be noted that reverse rotation of the shaft 25 is prevented by the abutment of the pawl 83 with the straight edge of the ratchet 32.

In the present instance the contact mem- 95 bers 45 are arranged to Contact with the sides of the contact members 29, their free ends lying in a plane parallel to the plane of the sides of the contacts 29. This form of contact member provides for larger' and more ehicient contact surface, and thus the danger of poor contacts is prevented. t

For preventing injury to the tickler coil 41 due to contact therewith by the rotation of the coils 40, the shaft 42 is provided with an extending arm 46 angularly disposed, where by when the tickler coil is received within the coil 40, the extremity ofthe arm 46 will lie over the extremity of the coil carrying arms 28, which arms are provided with projecting pins 17 adapted upon rotation ot the wheel 27 to contact with the arm 16, thus moving it outwardly and consequently' rotating the shaft 42 in a manner to withdraw the tickler coil 41 from its position adjacent the sides of the frame of the coil 40, whereby injury to the tickler coil is eiectively prevented and the ticlrler coil is automatically removed from the coil 40 when the coil is removed to present a different coil to the associated radio circuit.

From the foregoing it will readily be seen that the invention provides for association with the selected coil a tickler coil, whereby the circuit may be readily tuned in the same manner as is usually the practice with stationary coils. It will further be readily seen that automatic means for removing the tickler coil is provided when the arms 28 are rotated.

It may thus readily be seen that the primary object of the invention is to provide a plurality of coils for selective association in a radio circuit, and to provide efficient structural means for accomplishing this object. It will thus be understood that the invention is not confined to specific structural details, and that numerous changes and embodiments in the full use ot equivalents may, as herein before stated, be resorted to Without departing from the spirit or scope of the invention as outlined in the appended claims.

I claim:

1. In a device of the character described, a plurality of rotatably mounted coils adapted for selective association in a radio circuit, and a pivotally mounted coil adapted to move within the contines of the selected coil for variable electrical association therewith.

2. In a device of the character described, a plurality of rotatably mounted coils adapted for selective association in a radio circuit, a pivotally mounted coil adapted to move within the contines of the selected coil for variable electrical association therewith, and means for preventing accidental contact of said second-mentioned coil with said rotatably mounted coils or its frame.

3. In a device of the character described,'a plurality of rotatably mounted coils adapted for selective association in a radio circuit, a pivotally mounted coil adapted to move with- 1n the contines of the selected coil for variable electrical association therewith, and means for prevent-ing accidental contact of said second-mentioned coil with said rotatably mounted coils or its frame, said means including an arm movable with said secondmentioned coil.

4. In a device of the character described, a. plurality of rotatably mounted coils adapted for selective association in a radio circuit, a pivotally mounted coil adapted to move Within the contines of the selected coil for variable electrical association therewith, and means for preventing accidental contact of said second-mentioned coil with said rotatably mounted coils or its frame, said means including an arm movable with said secondmentioned coil. said arm being adapted for ac tluation by the rotation of said rotatable co1 s.

Signed at Brooklyn` in the county of Kings and State of New York, this 15th day of October, A. D. 1928.

ANTHONY P. HINSKY. 

